Clinton's support down 18 points in new poll
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Hillary ClintonHillary Diane Rodham Clinton‘Prosperity and peace’ is the winning Republican theme for midterms Mueller recommends Papadopoulos be sentenced to up to 6 months in prison Poll: Dem opponent leads Scott Walker by 5 points MORE's support has dropped almost 20 percent, according to a new USA Today/Suffolk University poll, though she maintains a double-digit lead in the race for the Democratic presidential nomination. 

The former secretary of State has support from 41 percent of likely Democratic primary voters in the new poll, followed by Sen. Bernie SandersBernard (Bernie) SandersBoogeywomen — GOP vilifies big-name female Dems RealClearPolitics editor: Moderate Democrats are losing even when they win Sanders tests his brand in Florida MORE (I-Vt.), with 23 percent, and Vice President Biden, at 20 percent. 
 
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The last USA Today/Suffolk survey in July found Clinton at 59 percent support, Sanders at 14 percent and Biden at 8 percent. Biden has since begun publicly mulling a White House bid.
 
Biden so far has not joined the race at this relatively late stage and is reportedly expected to skip the first Democratic debate hosted by CNN later this month. 
 
Clinton is now viewed unfavorably by 51 percent of likely voters, and 39 percent view her favorably. That's worse than in July, when the poll found those numbers at 43 percent to 47 percent.
 
Former Rhode Island Gov. Lincoln Chafee, former Virginia Sen. Jim Webb and former Maryland Gov. Martin O'Malley combine for less than 2 percent support in the latest poll. 
 
The survey of 430 Democrats was conducted Sept. 24–28 via phone with a margin of error of 5 points. The poll of 1,000 likely voters has a margin of error of 3 points.